I made these graphs for a different purpose but this topic came up in my mind when I saw that I found a nice example where the HirRes mode seems to have an actual advantage over the default mode. These are the SPDs of my PDP (note the red spikes): http://img717.imageshack.us/img717/8502/d550spec10vs333.png And the differences in the XYZ values: http://img204.imageshack.us/img204/5603/23458263.png